Controllable hydrogen production system

Abstract

The utility model provides a controllable hydrogen production system. The controllable hydrogen production system comprises a reactor, an aluminum conveying module, a sodium hydroxide conveying module, a water conveying module and a recovery module, wherein the aluminum conveying module, the sodium hydroxide conveying module and the water conveying module are respectively communicated with the reactor; the reactor is provided with a first outlet and a second outlet, the recovery module comprises a vibrating membrane filtration system, a first inlet of the vibrating membrane filtration system is communicated with the first outlet of the reactor, the vibrating membrane filtration system further comprises a third outlet, and the third outlet is communicated with the reactor; the second outlet is used for conveying the generated hydrogen. According to the controllable hydrogen method disclosed by the utility model, the controllable hydrogen system is utilized to realize efficient controllable hydrogen, and meanwhile, byproducts and sodium hydroxide are recycled by utilizing the vibrating membrane filtering system, so that the utilization rate of resources is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of aluminum water reaction hydrogen production, concretely relates to a controllable hydrogen system. BACKGROUND

[0002] With the increasing urgency of global environmental problems, the proportion of renewable energy in global energy consumption is rising year by year. Hydrogen energy is considered an important clean energy option to promote sustainable development due to its zero carbon emissions and high energy density. However, the current mainstream hydrogen production methods, such as fossil fuel hydrogen production, biomass conversion hydrogen production, and water electrolysis hydrogen production, all face challenges such as low efficiency, high cost, and environmental pollution. In addition, the storage and transportation of hydrogen gas have long been a key factor restricting the widespread application of hydrogen energy. Therefore, developing more efficient and environmentally friendly hydrogen production technologies and solving the storage and transportation bottleneck of hydrogen gas are crucial for the further development of the hydrogen energy industry.

[0003] Aluminum is a high-performance hydrogen storage material with high heat value characteristics, which can achieve on-site hydrogen production by reacting with water. This process is environmentally friendly and the product can be recycled. The high chemical activity of aluminum makes it easy to form a protective film at room temperature, effectively solving the problem of storage and transportation. However, this characteristic also requires special means to activate the reaction between aluminum and water. Currently, researchers have mainly adopted methods such as adding acid-base solutions, alloying treatment, adding activators, high-temperature operation, and preparing ultra-fine aluminum powder to activate the aluminum-water reaction, thereby significantly improving the rate and total amount of hydrogen generation.

[0004] In the process of aluminum-water reaction hydrogen production, some by-products such as aluminum hydroxide and unreacted sodium hydroxide will inevitably be produced. However, these by-products are not fully utilized and treated at present, resulting in a large amount of resources being wasted. In order to improve resource utilization and reduce environmental pollution, it is necessary to explore effective ways to recycle and reuse these by-products, so as to achieve more efficient and environmentally friendly hydrogen energy production. SUMMARY

[0005] The utility model aims at providing a controllable hydrogen system to solve the problem of not good utilization of by-products in the existing aluminum-water reaction hydrogen production.

[0006] To achieve the purpose of the utility model, the utility model provides a controllable hydrogen system, the controllable hydrogen system includes reactor, aluminium conveying module, sodium hydroxide conveying module, water conveying module and recovery module, wherein aluminium conveying module, sodium hydroxide conveying module and water conveying module are communicated with reactor respectively, reactor is provided with first outlet and second outlet, and recovery module includes diaphragm filter system, and the first inlet of diaphragm filter system is communicated with the first outlet of reactor, diaphragm filter system further includes third outlet, and third outlet is communicated with reactor, and second outlet is used to convey the hydrogen generated.

[0007] From the above scheme, the utility model can realize the reaction of activating aluminium and water in the reactor under normal temperature and pressure through aluminium conveying module, sodium hydroxide conveying module and water conveying module, can control the reaction to proceed and stop by controlling the adding amount of sodium hydroxide, aluminium and water, can realize the production of hydrogen as required, and eliminates the complexity of transportation and storage. Sodium hydroxide dissolves the oxide layer on the surface of aluminium and promotes the release of hydrogen. In addition, the utility model can effectively separate by-products such as aluminium hydroxide from the reaction solution by adding diaphragm filter system and using the micro power effect generated by diaphragm. The separated by-products can be collected and used for other processes, and the sodium hydroxide in the reaction solution can be recovered to the reactor for reuse, thereby maximizing resource utilization and economic benefits. The high shear force and high frequency vibration of diaphragm help to prevent the deposition and blockage of precipitates on the membrane surface, thereby improving the separation efficiency and the service life of the membrane. Compared with the traditional method that relies on precipitation and needs a lot of time and space to process by-products, the diaphragm filter system can realize continuous filtration and separation of by-products, thereby avoiding the need for a precipitation tank and simplifying the process flow, realizing efficient recovery and utilization of by-products.

[0008] Further, the recovery module further includes a concentrated by-product storage tank, and the concentrated by-product storage tank is communicated with the fourth outlet of the diaphragm filter system.

[0009] From the above scheme, the use of the storage tank can effectively collect and store the by-products generated during the reaction process, prevent their loss and ensure that the by-products will not harm personnel and the environment, and help to reuse resources.

[0010] Further, the recovery module further includes a by-product dilution tank, and the by-product dilution tank is arranged between the first outlet of the reactor and the first inlet of the diaphragm filter system.

[0011] As can be seen from the above scheme, since the by-products generated in the reactor can have a high concentration or temperature, directly entering the vibrating membrane filtration system can cause damage to the membrane material, reducing the filtration efficiency and service life. Through the buffering effect of the dilution tank, the concentration and temperature of the by-products can be effectively reduced, making them more suitable for the processing requirements of the vibrating membrane filtration system. Secondly, the setting of the dilution tank helps to improve the stability and reliability of the filtration system. During the dilution process, impurities and particulate matter in the by-products can be dispersed and settled to some extent, thereby reducing the risk of clogging the filtration system. At the same time, the diluted by-products are easier to pass through the vibrating membrane filtration system, improving the filtration efficiency and yield. In addition, the dilution tank also plays a role in adjusting and balancing the flow. Since the amount of by-products generated in the reactor can fluctuate to some extent, directly entering the filtration system can cause insufficient or excessive processing capacity. Through the storage and adjustment function of the dilution tank, it can ensure that the filtration system always operates under stable flow, avoiding equipment damage or processing efficiency decline caused by flow fluctuations. By optimizing the dilution ratio and filtration conditions, the recovery rate and purity of the by-products can be maximized.

[0012] Further, the aluminum conveying module comprises an aluminum storage tank, an aluminum conveyor, an aluminum buffer tank and a vibrating feeder connected in sequence, and the vibrating feeder is in communication with the reactor.

[0013] As can be seen from the above scheme, by the setting of the aluminum conveyor and the vibrating feeder, the transportation of solid aluminum can be effectively realized without pressurization or heat input, reducing energy consumption and ensuring stable, controllable and efficient delivery of aluminum to the reactor. The aluminum buffer tank has a certain buffering effect and prevents the leakage of gas in the reactor from contaminating the reaction raw materials.

[0014] Further, the aluminum conveyor is a screw conveyor.

[0015] As can be seen from the above scheme, aluminum has different physical forms such as powder, granules or small blocks, and the screw conveyor has good adaptability to these forms of materials, ensuring the integrity and stability of the materials and avoiding loss during transportation. Secondly, the conveying efficiency of the screw conveyor is higher than that of traditional methods, which can handle more materials in unit time, and in addition, the structure of the screw conveyor is simple, making its installation, maintenance and repair relatively convenient. This reduces the maintenance cost of the equipment and ensures the long-term stable operation of the equipment, which helps to improve the overall production efficiency and reduce the production cost. In addition, the design of the screw conveyor allows it to convey materials horizontally, obliquely or even vertically. This flexibility enables the screw conveyor to adapt to various complex production environments, ensuring that aluminum can be smoothly transported to the aluminum buffer tank. And the screw conveyor adopts airtight conveying, which can effectively prevent material leakage and dust, avoiding environmental pollution and health risks.

[0016] Further, the aluminum in the aluminum storage tank includes at least one of aluminum blocks, aluminum powder, aluminum particles, aluminum foil, aluminum slices, aluminum scrap and aluminum cans.

[0017] As can be seen from the above solutions, the aluminum in the present application can contain various forms, has a wide range of applications, and promotes the recycling of aluminum waste.

[0018] Further, the sodium hydroxide delivery module includes a sodium hydroxide solution tank, a first pressure pump and a sodium hydroxide buffer tank connected in sequence, the sodium hydroxide buffer tank is provided with a valve and a flow meter, and the sodium hydroxide buffer tank is connected with the reactor.

[0019] As can be seen from the above solutions, the sodium hydroxide buffer tank is provided with a valve and a flow meter, which can effectively control the amount of sodium hydroxide entering the reactor, play a buffering role, and also prevent gas in the reactor from leaking into the sodium hydroxide solution tank to contaminate sodium hydroxide.

[0020] Further, the reactor is provided with a stirrer, and the shell of the reactor is provided with a heat exchanger.

[0021] As can be seen from the above solutions, the stirrer effectively mixes the reaction substrate, improves the mass transfer of the reactants, and facilitates the reaction. The stirrer can also increase the exchange speed between the reaction components, promoting the mass transfer of the reaction components. The heat exchanger is mainly used for transferring heat between fluids to achieve the purpose of cooling, heating or maintaining temperature. By transferring heat to the reactants or reaction medium through the heat exchanger, the reaction conditions can be optimized, making the reaction more rapid and efficient.

[0022] Further, the second outlet is in communication with a hydrogen storage tank or a fuel cell.

[0023] As can be seen from the above solutions, the hydrogen produced by the reaction can be used differently according to user needs. If the user needs hydrogen, the hydrogen produced by the reactor is pressurized by the compressor and stored in the hydrogen storage tank through the second outlet. If the user needs electricity, the hydrogen produced by the reactor is input into the fuel cell through the second outlet and converted into electricity. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a process flow chart of the controllable hydrogen system of the present application.

[0025] The present application will be further described below in conjunction with the drawings and examples. DETAILED DESCRIPTION

[0026] Referring to Figure 1 The controllable hydrogen production system of the present application includes a reactor 1, an aluminum delivery module, a sodium hydroxide delivery module, a water delivery module and a recovery module.

[0027] The reactor 1 is provided with a first outlet and a second outlet. The first outlet is in communication with the recovery module, and the second outlet is in communication with the hydrogen collection module 6. The hydrogen collection module 6 includes a hydrogen storage tank or a fuel cell. The reactor 1 is provided with a stirrer, and the shell of the reactor 1 is provided with a heat exchanger. The stirrer improves the mixing and mass transfer effect of the reactants, and the heat exchanger optimizes the reaction conditions through heat transfer.

[0028] The aluminum conveying module includes an aluminum storage tank 21, an aluminum conveyor 22, an aluminum buffer tank 23 and a vibrating feeder 24 connected in sequence, and the vibrating feeder 24 is in communication with the reactor 1. The aluminum in the aluminum storage tank 21 includes various forms, which can be at least one of aluminum blocks, aluminum powder, aluminum particles, aluminum foil, aluminum slices, waste aluminum scraps and waste aluminum cans, has a wide range of applications, and promotes the recycling of aluminum waste. Preferably, the aluminum conveyor 22 is a screw conveyor. The screw conveyor has good adaptability to various forms of aluminum, can ensure the integrity and stability of the material, and avoid loss during transportation. Secondly, the screw conveyor also has the advantages of improving the overall production efficiency, reducing production cost, adapting to various transportation environments, avoiding environmental pollution and health risks, etc. The setting of the aluminum conveyor 22 and the vibrating feeder 24 can effectively realize the transportation of solid aluminum without the need for pressurization or heat input, reduce energy consumption, and ensure stable, controllable and efficient transportation of aluminum to the reactor 1. The aluminum buffer tank 23 has a certain buffering effect and prevents the leakage of gas in the reactor 1 from contaminating the reaction raw materials in the aluminum storage tank 21.

[0029] The sodium hydroxide conveying module includes a sodium hydroxide solution tank 31, a first pressure pump 32 and a sodium hydroxide buffer tank 33 connected in sequence, and the sodium hydroxide buffer tank 33 is provided with a valve and a flow meter, and the sodium hydroxide buffer tank 33 is connected with the reactor 1. The sodium hydroxide buffer tank 31 is provided with a valve and a flow meter, which can effectively control the amount of sodium hydroxide entering the reactor, play a buffering role, and also prevent the leakage of gas in the reactor 1 from contaminating the sodium hydroxide in the sodium hydroxide solution tank 31.

[0030] The water conveying module includes a water storage tank 41 and a second pressure pump 42, and the water in the water storage tank 41 is conveyed to the reactor 1 by the second pressure pump 42.

[0031] The recovery module includes a diaphragm filter system 51, a concentrated byproduct storage tank 52, and a byproduct dilution tank 53. The diaphragm filter system 51 includes a first inlet, a third outlet, and a fourth outlet. The first inlet is in communication with the first outlet of the reactor 1, the third outlet is in communication with the reactor 1, and the fourth outlet is in communication with the concentrated byproduct storage tank 52. The byproduct dilution tank 53 is disposed between the first outlet of the reactor 1 and the first inlet of the diaphragm filter system 51. The diaphragm filter system 51 utilizes the micro-power effect generated by the diaphragm to effectively separate the byproduct, such as aluminum hydroxide, from the reaction solution and store it in the concentrated byproduct storage tank 52, which is a resource for reuse. The sodium hydroxide contained in the reaction solution can be recovered to the reactor 1 for reuse, thereby maximizing resource utilization and economic benefits. The high shear force and high frequency vibration of the diaphragm help to prevent the deposition and clogging of precipitates on the membrane surface, thereby improving the separation efficiency and the service life of the membrane. Since the byproduct generated in the reactor 1 can have a high concentration or temperature, directly entering the diaphragm filter system 51 can cause damage to the membrane material, reducing the filtration efficiency and service life. Through the buffering effect of the byproduct dilution tank 53, the concentration and temperature of the byproduct can be effectively reduced, making it more suitable for the processing requirements of the diaphragm filter system 51. In addition to this, the byproduct dilution tank 53 also has the effects of improving the stability and reliability of the diaphragm filter system 51, reducing clogging and balancing flow, improving the recovery rate and purity of the byproduct, improving filtration efficiency and yield, and many other effects.

[0032] The controllable hydrogen system of the present embodiment can implement a controllable hydrogen method, which includes the following steps:

[0033] S1: Sodium hydroxide and water are transported into the reactor 1 by the sodium hydroxide delivery module and the water delivery module, respectively, to prepare a sodium hydroxide solution with a set concentration, and the set concentration of the sodium hydroxide solution in the reactor 1 is 0.1% to 20%;

[0034] S2: A set amount of aluminum is added to the reactor 1 containing the set concentration to react;

[0035] S3: The hydrogen gas generated by the reaction is transported out of the reactor through the second outlet of the reactor 1, and the solution after the reaction enters the recovery module through the first outlet. The diaphragm filter system 51 in the recovery module recovers the byproduct and recovers the sodium hydroxide solution into the reactor.

[0036] In the controllable hydrogen system of the present embodiment, pressure sensors, temperature sensors, pH sensors, liquid level sensors, and other sensors can also be provided. Through the external control system, the information of various sensors is used to control the valve switches between the tank bodies and equipment, as well as the stirrers and heat exchangers, thereby achieving automatic control of the entire hydrogen production process, making the hydrogen production process more efficient and controllable.

[0037] The controllable hydrogen system of the embodiment can realize the controllable hydrogen method, the reaction of aluminum and water in the reactor 1 is activated at normal temperature and pressure by the aluminum conveying module, the sodium hydroxide conveying module and the water conveying module, the addition amount of sodium hydroxide, aluminum and water is controlled to control the start and stop of the reaction, and hydrogen is produced on demand, and the complexity of transportation and storage is eliminated. The sodium hydroxide dissolves the oxide layer on the surface of the aluminum, and promotes the release of hydrogen. The addition of the diaphragm filter system 51 ensures the recovery of valuable aluminum hydroxide and sodium hydroxide, which helps to realize a closed loop and a sustainable process. Through the setting of the aluminum conveyor 22 and the vibrating feeder 24, various solid aluminum can be effectively transported without pressurization or heat input, which has a wide range of applications and promotes the recycling of aluminum waste. The hydrogen collection module 6 can be a hydrogen storage tank or a fuel cell, which realizes different applications of hydrogen according to user needs. If the user needs hydrogen, the hydrogen generated by the reactor 1 is pressurized by the compressor through the second outlet to the hydrogen storage tank. If the user needs electricity, the hydrogen generated by the reactor is input into the fuel cell through the second outlet, and is converted into electricity.

[0038] Finally, it should be emphasized that the above is only the preferred embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A controllable hydrogen system, characterized by, The system comprises: a reactor, an aluminum delivery module, a sodium hydroxide delivery module, a water delivery module, and a recovery module; wherein the aluminum delivery module, the sodium hydroxide delivery module, and the water delivery module are respectively in communication with the reactor; the reactor is provided with a first outlet and a second outlet, the recovery module comprises a diaphragm filter system, a first inlet of the diaphragm filter system is in communication with the first outlet of the reactor, and the diaphragm filter system further comprises a third outlet in communication with the reactor; the second outlet is used to deliver the generated hydrogen.

2. The controllable hydrogen system according to claim 1, wherein: the recovery module further comprises a concentrated byproduct storage tank in communication with a fourth outlet of the diaphragm filter system.

3. The controllable hydrogen system according to claim 1, wherein: the recovery module further comprises a byproduct dilution tank arranged between the first outlet of the reactor and the first inlet of the diaphragm filter system.

4. The controllable hydrogen system according to claim 1, wherein: the aluminum delivery module comprises an aluminum storage tank, an aluminum conveyor, an aluminum buffer tank, and a vibrating feeder connected in sequence, and the vibrating feeder is in communication with the reactor.

5. The controllable hydrogen system according to claim 4, wherein: the aluminum conveyor is a screw conveyor.

6. The controllable hydrogen system according to claim 4, wherein: the aluminum in the aluminum storage tank comprises at least one of aluminum blocks, aluminum powder, aluminum particles, aluminum foil, aluminum slices, waste aluminum shavings, and waste aluminum cans.

7. The controllable hydrogen system according to any one of claims 1 to 6, wherein: the sodium hydroxide delivery module comprises a sodium hydroxide solution tank, a first pressure pump, and a sodium hydroxide buffer tank connected in sequence, the sodium hydroxide buffer tank is provided with a valve and a flow meter, and the sodium hydroxide buffer tank is connected to the reactor.

8. The controllable hydrogen system according to any one of claims 1 to 6, wherein: the reactor is provided with a stirrer, and the shell of the reactor is provided with a heat exchanger.

9. The controllable hydrogen system according to any one of claims 1 to 6, wherein: the second outlet is in communication with a hydrogen storage tank or a fuel cell.

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